Dishwasher would not fill with water.

After doing some research in a repair book I decided to take a stab with a water inlet valve. With expedited shipping I ordered the part and within three days it was delivered. I installed it and the dishwasher seemed like it was trying to fill but still would not. After much cocnsternation I turned the water supply valve to the dishwasher a partial turn to close and I felt the water rush through the valve and the dishwasher then filled. Apparently the shut off valve must have been clogged plus it now leaked. I then replaced the shutoff valve and the copper pipe to the water inlet valve with flexible 3/8" tubing and the dishwasher thus far is running fine without leaks.